<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<body>
    <nav>
        <a href="./index.html">首页</a>
        <a href="about.html">关于我们</a>
    </nav>

    <h1>INDEX</h1>
    <input id="in" type="text" placeholder="请输入文本">
    <button id="in_btn">添加到列表</button>
    <ul>
        <li id="list"></li>
    </ul>
</body>
</html>